package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

/**
 * @author zhangshihao
 * @create 2023-03-14 9:02
 */
@Service
public class PaymentService {
    /**
     * 正常访问，肯定ok的
     *
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfo_OK, id: " + id + "\t" + "O(∩_∩)O哈哈~";
    }

    // @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
    //         @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    // }) // 超过3秒就使用fallbackMethod指定的方法
    public String paymentInfo_TimeOut(Integer id) {
        // int age = 10/0;
        int timeNumber = 5;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池：" + Thread.currentThread().getName() + "id: " + id + "\t" + "O(∩_∩)O哈哈~" + "  耗时(秒): ";
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "fallback 线程池：" + Thread.currentThread().getName() + "  8001系统繁忙，请稍后再试, id: " + id + "\t" + "o(╥﹏╥)o";
    }

    // ====服务熔断
    //======================服务熔断===============
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),// 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),// 失败率达到多少后跳闸 60%
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("========id不能为负数");
        }
        String serialNumber = IdUtil.simpleUUID();  // 等价于 UUID.randomUUID().toString();
        return Thread.currentThread().getName() + "  调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id不能为负数，请稍后再试   id:" + id;
    }

}
